Three Mile Island, the dormant Pennsylvania nuclear plant at the center of the Microsoft deal, became "shorthand for the risks posed by nuclear energy after one of the plant's two reactors partly melted down in 1979,

Constellation Energy and Microsoft plan to restart the Three Mile Island nuclear plant, hoping they have scored a quick source of enough climate-friendly energy to power rapidly expanding data centers for artificial intelligence (AI).

Big Tech needs electricity to fuel its rapid, electricity-guzzling expansion of its AI capabilities, but a recent deal between Constellation Energy and Microsoft can't fill the gap immediately.